Method oii cutting curved moldings



J J. WESTERFIELE. MAGEINE FOR CUTTING CIRCULAR AND BLIPTIOAL MOLDENGS.

No.16,197. I Pate-sized ix-(19,1856.

UNITED STATES PATENT OFFICE.

JOHN J. WESTERFIELD, OF NEW BItUNSVVIGK, NEIV JERSEY.

METHOD OF CUTTING Specification of Letters Patent No.

To all whom it may concern.

Be it known that I, JOHN J. WESTERFIELD, of New Brunswick, in the countyof MiddleseX and State of New Jersey, have invented a new and ImprovedMachine for Cutting Circular and Elliptical Moldings; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, making a part ofthis specification, in which Figure 1, is a transverse vertical sectionof my improvement, :0, m, Fig. 2, showing the plane of section. Fig. 2,is a plan or top view of ditto. Fig. 8,"is a vertical section of theelliptical bed. Fig. 4, is a plan or top view of the same.

My invention consists in the employment or use of an inclined bed,having a circular or rotating motion, and a conical cutter head withcurved cutters attached, the whole being arranged and operating as will.be hereinafter fully shown and described, so that circular andelliptical moldings may be cut with the greatest facility.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A, represents a rectangular frame which may be constructed in any propermanner to support the working parts.

B, represents the driving shaft of the machine, placed at one end of theframe A. This shaft has a pulley C, at one end, and a driving pulley D,at about its center; a smaller pulley E, is also placed on said shaftadjoining the pulley D.

F, is a shaft which is placed transversely in the lower part of theframe A, near its center. This shaft has a pulley G, upon it and a screwH, at one end. The screw H, gears into a toothed wheel I, which isplaced on the lower end of a vertical shaft J, at one side of the frameA. The upper end of the shaft J, also has a toothed wheed K, upon it andthis wheel gears into a segment rack L, which is secured to the edge ofa quadrant frame M, on which a quadrant bed N, is placed. The frame M,is fitted or works on an inclined shaft 0, attached.

to one side of the frame A, said shaft being the center on which theframe works; the

CURVED MOLDINGS.

16,197, dated December 9, 1856.

edge of the frame is grooved and fits over a segment way a, on the upperpart of the frame A.

The frame M, and bed N, it will be seen, are inclined, the shaft O,being at right angles with it.

P, P, represent two guide-frames, one of which is attached to the upperend of the shaft 0, and the other to a cross bar on the upper part ofthe frame A. These guide frames have each a sliding bearing 6, fitted inthem and a shaft Q, is fitted in said bearings. The bearings are raisedand lowered by screws R, which pass through the upper ends of the guideframes and are attached to the bearings b. On one end of the shaft Q, apulley c, is attached, said pulley having a belt (Z, passing around it,the belt (Z, also passing around the pulley C, on the shaft B. A belt 6,also passes around the pulleys E, G, on the shafts B, F.

On the shaft Q, a conical cutter head S, is attached, and f, f, are thecutters secured to the head. The taper of the head S, corresponds to theinclination of the bed N, and the cutters f, are curved so as to form aportion of a circle, of which the center of motion of the bed N, andframe M, is the center. This will be understood by referring to Fig. 1.

The stuff T, to be cut, shown in red, is sawed out to the proper widthand thickness and secured to the edge of the bed N, and motion beinggiven the shaft B, in any proper manner, the cutter head S, is rotatedand the bed N, and frame M, are turned so that the stuff T, .is passedunderneath the cutters which cut the molding.

In consequence of having the bed N, inclined and the head S, of conicalor taper form and the cutters f, curved as shown, the circular moldingis cut equally as well as the straight ones are cut in the machines usedfor that purpose, because each part of the cutters travels or moves witha speed proportionate to the portion of the stuff upon which it acts. Infact the operation is the same or analogous to a conical roller passingor working around upon a circular bed.

The head S, may be adjusted at difierent points upon the shaft Q, asdesired, and cir a circular revolving bed U, upon a frame U placed in aninclined position on the frame A, and elliptical moldings may be cut byhaving an elliptical bed V, placed on the bed U, said bed V, beingconnected to the bed U, by a trammel WV, see Figs. 3 and 4.

The above machine has been practically tested and operates well. It isdesigned to be used for cutting oval and circular picture and mirrowframes, or moldings therefor, and for similar purposes.

I do not claim the elliptical or oval bed V, connected by the trammel W,to the rotating bed U, for this is an old and well known V cularmoldings may be cut entire by placing I device for cutting and drawingor describing ovals, but

Having thus described my invention, what I claim as new and desire tosecure by Let ters Patent, is

The inclined bed N, either of quadrant, circular or elliptical form andthe conical head S, provided with curved cutters 1, arranged andoperating conjointly as shown for the purpose specified.

JOHN J. VESTERFIELD.

Witnesses:

WM. H. HELM, J NO. WALDRON.

